radiation

The DNA from children of Chernobyl survivors has been sequenced and does not show higher levels of mutations than other children.

Jupiter's moon Europa might not need the sun's rays to glow. If so, its color will shed light on the chemistry of the ocean world.

Researchers create a melanin particle containing selenium, providing even more protection from harsh UV rays. These nanoparticles can be incorporated into clothing - providing astronauts a very lightweight alternative to lead shielding.